Http Cache: chain GetLoadState from transactions waiting for...

net/http/http_cache.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file declares a HttpTransactionFactory implementation that can be
 // layered on top of another HttpTransactionFactory to add HTTP caching.  The
 // caching logic follows RFC 2616 (any exceptions are called out in the code).
 //
 // The HttpCache takes a disk_cache::Backend as a parameter, and uses that for
 // the cache storage.
@@ skipping 10 matching lines @@
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/hash_tables.h"
 #include "base/message_loop_proxy.h"
 #include "base/non_thread_safe.h"
 #include "base/scoped_ptr.h"
 #include "base/task.h"
 #include "base/weak_ptr.h"
 #include "net/base/cache_type.h"
 #include "net/base/completion_callback.h"
+#include "net/base/load_states.h"
 #include "net/http/http_transaction_factory.h"
 
 class GURL;
 
 namespace disk_cache {
 class Backend;
 class Entry;
 }
 
 namespace net {
@@ skipping 262 matching lines @@
   // is false if the cache entry should be deleted.
   void DoneWritingToEntry(ActiveEntry* entry, bool success);
 
   // Called when the transaction has finished reading from this entry.
   void DoneReadingFromEntry(ActiveEntry* entry, Transaction* trans);
 
   // Convers the active writter transaction to a reader so that other
   // transactions can start reading from this entry.
   void ConvertWriterToReader(ActiveEntry* entry);
 
+  // Returns the LoadState of the provided pending transaction.
+  LoadState GetLoadStateForPendingTransaction(const Transaction* trans);
+
   // Removes the transaction |trans|, from the pending list of an entry
   // (PendingOp, active or doomed entry).
   void RemovePendingTransaction(Transaction* trans);
 
   // Removes the transaction |trans|, from the pending list of |entry|.
   bool RemovePendingTransactionFromEntry(ActiveEntry* entry,
                                          Transaction* trans);
 
   // Removes the transaction |trans|, from the pending list of |pending_op|.
   bool RemovePendingTransactionFromPendingOp(PendingOp* pending_op,
@@ skipping 42 matching lines @@
 
   typedef base::hash_map<std::string, int> PlaybackCacheMap;
   scoped_ptr<PlaybackCacheMap> playback_cache_map_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpCache);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_CACHE_H_